| Autor: |
Hussein, Saber, Arman, Hasan, Murad, Ahmed, Aldahan, Ala, Basarir, Aydin, Al-Abri, Mohamed Abdulla |
| Předmět: |
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| Zdroj: |
Annual International Conference on Geological & Earth Sciences; 2016, p63-68, 6p |
| Abstrakt: |
Al Jaww plain is a large spread area made up of clastic (gravel, sand and clay) outwashes from the Oman Mountains. The plain has a significant role for groundwater resources in Al-Ain region, eastern part of the United Arab Emirates. Amongst the material properties that control water transport and storage in Al Jaww plain are the texture and composition which were poorly investigated. In the investigation presented here, analysis of the sediment cover (about 1-1.2 m depth) properties together with infiltration rate were conducted at five sites. In addition data of precipitation and temperature from five meteorological stations were evaluated in order to link the capacity of the plain to accommodate events of storm rainfall and flush flooding. The textural and compositional data reveal mixtures of poorly-sorted to well-sorted sediments dominated by carbonates and ophiolites lithology. The hydraulic conductivity ranges from 1 to 225 cm/s, and the increment infiltration rate acquires the maximum value equal 69 cm/hr in the eastern side of the study area and the minimum is zero cm/hr in the western side. The relatively better infiltration rate along the eastern side of the plain compared to western side suggests that storms and heavy rain events may lead to more flush flooding along the western part. This finding is vital for the planning of urban activity in the plain area. More extensive evaluation of infiltration rates tests in the plain area and along the main valleys, sand dunes and interdunes will be essential to identify the probable pathways of the surface water and estimate of the total water transport and storage capacity in the region. This in turn will provide better grounds to plan for actions during storms and flush flooding and to maintain sustainability of the shallow fresh groundwater aquifer in the UAE. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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